Thursday, June 21, 2007

Earth could 'flip' into environmental disaster

The study looked back over more than 400,000 years of climate records from deep ice cores and found evidence to suggest that rapid climate change over a period of centuries, or even decades, have in the past occurred once the world began to heat up and ice sheets started melting.
"The unnatural "forcing" of the climate as a result of man-made emissions of carbon dioxide and other greenhouse gases threatens to generate a "flip" in the climate that could "spark a cataclysm" in the ice sheets of Antarctica and Greenland.

Dramatic climatic flips have occurred in the past but none has happened since the development of complex human societies, which are unlikely to survive the same sort of environmental changes if they occurred now."
It has already flipped, contrails, shiptrails, and other trails have , so far, saved the earth. jc
clipped from
Earth is in imminent peril and nothing short of a planetary rescue will save it from the environmental cataclysm of dangerous climate change, six leading scientists say .

They also implicitly criticise the UN's Intergovernmental Panel on Climate Change for under-estimating the scale of sea-level rises this century as a result of melting glaciers and polar ice sheets.

"Civilisation developed, and constructed extensive infrastructure, during a period of unusual climate stability, the Holocene, now almost 12,000 years in duration. That period is about to end," the scientists say.

Humanity cannot afford to burn
Earth's remaining underground reserves of fossil fuel. "To do so would guarantee dramatic climate change, yielding a different planet from the one on which civilisation developed
for which extensive physical infrastructure has been built

the and," they say.

clipped from
The albedo flip property of ice/water provides a trigger mechanism
 blog it

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